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中国大学MOOC23级专门用途英语作业答案

23级专门用途英语

学校: 九八五题库

学校: 超星学习通

题目如下：

1. 1. I. Listen to the audio clip and fill in the blanks New Words: 1. aorta [ei'ɔːtə] (pl. aortas或aortae [ei'ɔːti]主动脉 2. aortic valve [ ei'ɔ:tik ' vælv] n.主动脉瓣 3. artery ['aːtəri]n.动脉 4. atrium ['etriəm] (pl. atria [ 'ɑtrɪə]或atriums)心房 5. chamber ['tʃeɪmbər]n.(植物、动物或器官的)腔，室 6. coronary ['kɔrəneri];冠状动脉的 7. mitral valve[ 'maɪtrəl 'vælv ] n. 僧帽瓣，二尖瓣 8. pulmonary ['pʌlməneri] adj.肺的 9. pulmonic [pʌl'mɒnɪk]adj.肺的 10. pulmonic valve[ pʌl'mɒnɪk 'vælv]n肺动脉瓣 11quart [ kwɔ:t n.夸脱(液量单位，等于1/4加仑) 12. replenish [rɪ'plenɪʃ] vt. 把....再装满，再填满;补充 13. tricuspid valve [traɪ'kʌspɪd ' vælv]n. 三尖瓣 14. valve [vælv]]n.瓣膜 15. vein [ vein]n.静脉 16.vena cava [ ,vinə ;keivə]n. (pl. venae cavae [ ,vini: ' keivi]腔静脉 17. ventricle [ ' ventrikl ]n.心室 During a normal heartbeat, 1.______________returning from the body enters the 2.__________through the vena cava. The right atrium contracts, pushing blood through the 3. __________ and into the right ventricle. Next, the right ventricle contracts to pump blood through the pulmonic valve and into the 4.___________, which connects to the 5. . At the same time, 6.______________returning from the lungs is delivered to the heart through the pulmonary veins. The pulmonary veins empty into the 7.__________,which contracts to push oxygen-rich blood through the 8.___________ and into the left ventricle. The left ventricle contracts , pushing the blood through the aotric valve and into the 9. , which distributes blood to 10.______ through the body.

答案: oxygen-poor blood# right atrium# tricuspid valve# pulmonary artery# lungs# oxygen-rich blood# left atrium# mitral valve# aorta# arteries

2. 2. Watch the video in 1.1 or listen to the following audio ,and decide whether the following information is True (T) or False (F). ( ) 1. it is mentioned in the video that the heart is approximately as big as your fist. ( ) 2. The heart pumps about 4 quarts of blood every 30 seconds. ( ) 3. During each heartbeat, blood is circulated to the lungs as well as the body. ( ) 4. Two valves separate the right ventricle from the aorta and the left ventricle from the pulmonary artery. ( ) 5. It is through the coronary arteries that the heart is supplied with blood.

答案: T# F# T# F# T

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